Esther Klann, Ronny Ramlau,
"Regularization properties of Mumford-Shah type functionals with perimeter and norm constraints for linear ill-posed problems"
, in SIAM Journal on Imaging Sciences, Vol. 6, Nummer 1, Seite(n) 413?436, 2013
Regularization properties of Mumford-Shah type functionals with perimeter and norm constraints for linear ill-posed problems
Sprache des Titels:
In this paper we consider the simultaneous reconstruction and segmentation of a function $f$ from measurements $g=Kf$, where $K$ is a linear operator. Assuming that the inversion of $K$ is ill-posed, regularization methods have to be used for the inversion process in case of inexact data. We propose using a Mumford--Shah-type functional for the stabilization of the inversion. Restricting our analysis to the recovery of piecewise constant functions, we investigate the existence of minimizers, their stability, and the regularization properties of our approach. Finally, we present a numerical example from single photon emission computed tomography (SPECT).
Read More: http://epubs.siam.org/doi/abs/10.1137/110858422